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    Optical gain fibers
    13.
    发明专利
    Optical gain fibers 未知

    公开(公告)号：AU1340701A

    公开(公告)日：2001-06-25

    申请号：AU1340701

    申请日：2000-10-23

    Applicant: CORNING INC

    Inventor： CHU POLLY W ,  ELLISON ADAM J G ,  GOFORTH DOUGLAS E ,  HAWTOF DANIEL W ,  WHALEN JOSEPH M

    IPC: G02B6/00 ,  C03C3/095 ,  C03C13/04 ,  H01S3/06 ,  H01S3/067 ,  H01S3/10 ,  H01S3/16 ,  H01S3/17

    Abstract: Disclosed are optical gain fibers which include an erbium-containing core and a cladding surrounding the core and which have ripple of less than about 25% over about a 40 nm wide window or ripple of less than about 15% over about a 32 nm wide window, or both. In one embodiment, the optical gain fibers are pumpable at 980 nm and at 1480 nm. In another embodiment, the optical gain fibers are fusion sliceable. In yet another embodiment, the core includes oxides erbium; the cladding includes silicon dioxide; and the optical gain fiber has a passive loss of less than about 0.5% of the peak absorption of the erbium absorption band in the vicinity of 1530 nm. The optical gain fibers of the present invention have a wider gain window, improved flatness across the gain window, and/or increased gain as compared to conventional optical gain fibers. Accordingly, they are useful in amplifying optical signals, particularly signals which need to be repeatedly amplified over the course of a long-haul transmission, without losses in the signal quality that are commonly encountered in conventional optical signal amplifying methods.

    OPTICAL GAIN FIBERS
    14.
    发明专利
    OPTICAL GAIN FIBERS 未知

    公开(公告)号：CA2394620A1

    公开(公告)日：2001-06-21

    申请号：CA2394620

    申请日：2000-10-23

    Applicant: CORNING INC

    Inventor： GOFORTH DOUGLAS E ,  HAWTOF DANIEL W ,  ELLISON ADAM J G ,  WHALEN JOSEPH M ,  CHU POLLY W

    IPC: G02B6/00 ,  C03C3/095 ,  C03C13/04 ,  H01S3/06 ,  H01S3/067 ,  H01S3/10 ,  H01S3/16 ,  H01S3/17 ,  G02B6/26

    Abstract: Disclosed are optical gain fibers which include an erbium-containing core an d a cladding surrounding the core and which have ripple of less than about 25 % over about a 40 nm wide window or ripple of less than about 15 % over about a 32 nm wide window, or both. In one embodiment, the optical gain fibers are pumpable at 980 nm and at 1480 nm. In another embodiment, the optical gain fibers are fusion sliceable. In yet another embodiment, the core includes oxides erbium; the cladding includes silicon dioxide; and the optical gain fiber has a passive loss of less than about 0.5 % of the peak absorption of the erbium absorption band in the vicinity of 1530 nm. The optical gain fibe rs of the present invention have a wider gain window, improved flatness across the gain window, and/or increased gain as compared to conventional optical gain fibers. Accordingly, they are useful in amplifying optical signals, particularly signals which need to be repeatedly amplified over the course o f a long-haul transmission, without losses in the signal quality that are commonly encountered in conventional optical signal amplifying methods.

    PROCESS FOR DRYING POROUS GLASS PREFORMS
    17.
    发明申请
    PROCESS FOR DRYING POROUS GLASS PREFORMS 审中-公开
    用于干燥多孔玻璃预制件的方法

    公开(公告)号：WO0226646A3

    公开(公告)日：2002-10-31

    申请号：PCT/US0142408

    申请日：2001-09-27

    Applicant: CORNING INC

    Inventor： BURKE GERALD E ,  CHANG LISA F ,  DAWES STEVEN B ,  GRANGER GARY P ,  MURTAGH MICHAEL T ,  ONUH CHUKWUEMEKA B ,  SCHIEFELBEIN SUSAN L ,  SWECKER JEANNE L ,  WANG JI ,  WHALEN JOSEPH M

    IPC: G02B6/00 ,  C03B8/04 ,  C03B19/14 ,  C03B37/014 ,  G02B6/02

    CPC classification number: C03B19/1453 ,  C03B37/01446

    Abstract: The disclosed invention relates to the use of a specific drying agent in a process for drying glass soot preforms. The drying agent includes at least one halide and at least one reducing agent. Preferably, the reducing agent includes a compound that will react with an oxygen by-product of the reaction of the halide and water, or the reaction of the halide and an impurity in the preform. The method includes disposing the soot preform in a furnace, charging the furnace with the drying agent of halide and reducing agent and supplying heat to the furnace. Suitable drying agents for use in the process disclosed include a mixture of Cl2 and CO; a mixture of Cl2, CO and CO2; and POCl3: the latter being an example where the halide and reducing agent are embodied by a single compound.

    Abstract translation: 所公开的发明涉及在干燥玻璃烟炱预制件的方法中使用特定的干燥剂。 干燥剂包括至少一种卤化物和至少一种还原剂。 优选地，还原剂包括将与卤化物和水的反应的氧副产物反应的化合物或卤化物与预型体中的杂质的反应。 该方法包括将烟灰预制件放置在炉中，向炉中加入卤化物和还原剂的干燥剂并向炉内供热。 用于所公开方法的合适的干燥剂包括Cl 2和CO的混合物; Cl2，CO和CO2的混合物; 和POCl 3：后者是卤化物和还原剂由单一化合物体现的实例。

    OPTICAL GAIN FIBERS
    18.
    发明申请
    OPTICAL GAIN FIBERS 审中-公开
    光学增益纤维

    公开(公告)号：WO0144837B1

    公开(公告)日：2002-01-03

    申请号：PCT/US0029215

    申请日：2000-10-23

    Applicant: CORNING INC

    Inventor： CHU POLLY W ,  ELLISON ADAM J G ,  GOFORTH DOUGLAS E ,  HAWTOF DANIEL W ,  WHALEN JOSEPH M

    IPC: G02B6/00 ,  C03C3/095 ,  C03C13/04 ,  H01S3/06 ,  H01S3/067 ,  H01S3/10 ,  H01S3/16 ,  H01S3/17 ,  G02B6/26

    CPC classification number: C03C3/06 ,  C03C3/083 ,  H01S3/06716 ,  H01S3/06754 ,  H01S3/1601 ,  H01S2301/04

    Abstract: Disclosed are optical gain fibers which include an erbium-containing core and a cladding surrounding the core and which have ripple of less than about 25 % over about a 40 nm wide window or ripple of less than about 15 % over about a 32 nm wide window, or both. In one embodiment, the optical gain fibers are pumpable at 980 nm and at 1480 nm. In another embodiment, the optical gain fibers are fusion sliceable. In yet another embodiment, the core includes oxides erbium; the cladding includes silicon dioxide; and the optical gain fiber has a passive loss of less than about 0.5 % of the peak absorption of the erbium absorption band in the vicinity of 1530 nm. The optical gain fibers of the present invention have a wider gain window, improved flatness across the gain window, and/or increased gain as compared to conventional optical gain fibers. Accordingly, they are useful in amplifying optical signals, particularly signals which need to be repeatedly amplified over the course of a long-haul transmission, without losses in the signal quality that are commonly encountered in conventional optical signal amplifying methods.

    Abstract translation: 公开了一种光增益光纤，其包括含铒的芯和围绕芯的包层，并且在大约40nm宽的窗口上具有小于约25％的波纹或在约32nm宽的窗口上具有小于约15％的纹波 ， 或两者。 在一个实施例中，光增益光纤在980nm和1480nm可泵浦。 在另一个实施例中，光增益光纤是可熔切割的。 在另一个实施方案中，芯包括氧化物铒; 包层包括二氧化硅; 并且光增益光纤具有小于1530nm附近的铒吸收带的峰值吸收的约0.5％的被动损耗。 与常规光增益光纤相比，本发明的光增益光纤具有更宽的增益窗口，改善增益窗上的平坦度和/或增益增益。 因此，它们可用于放大光信号，特别是在长距离传输过程中需要重复放大的信号，而不会损害传统光信号放大方法中常见的信号质量。

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